Preheat oven to 200°C fan forced. Lightly grease an ovenproof dish.
Microwave the cauliflower, broccoli & sweet potato rice for 2 minutes on High/100%.
Scatter the corn chips over the dish. Spoon over passata then the cauliflower, broccoli & sweet potato rice. Sprinkle over the spice followed by the cheese. Bake for 10 minutes until cheese has melted and the corn chips are warm.
Meanwhile, combine tomato, avocado and coriander. Squeeze over half the lime and stir to combine. Spoon the salsa over the nachos and serve with remaining lime.